diff --git a/docs/yatexe b/docs/yatexe
index 5fb1e0d..4e0a519 100644
--- a/docs/yatexe
+++ b/docs/yatexe
@@ -1504,6 +1504,11 @@
  -- Variable: YaTeX-dvipdf-command
      Default command name to convert .dvi to PDF (`"dvipdfmx"')
 
+ -- Variable: YaTeX-on-the-fly-preview-interval
+     Interval time in seconds of idle to trigger on-the-fly preview of
+     environment by `[prefix] t e'(0.9).  `Nil' disables on-the-fly
+     preview.
+
  -- Variable: YaTeX-cmd-gimp
      Command name of GIMP (code{"gimp"})
  -- Variable: YaTeX-cmd-tgif
@@ -2263,19 +2268,19 @@
 Node: Customizations46838
 Node: Lisp variables47172
 Node: All customizable variables48176
-Node: Sample definitions59211
-Node: Hook variables59724
-Node: Hook file60428
-Node: Add-in functions60767
-Node: How the add-in function works61627
-Node: Defining option-add-in63826
-Node: Defining argument-add-in64548
-Node: Defining enclosing-add-in65430
-Node: How the function is called66284
-Node: Useful functions for creating add-in66960
-Node: Contribution68365
-Node: Add-in generator68639
-Node: Etcetera74011
-Node: Copying74616
+Node: Sample definitions59413
+Node: Hook variables59926
+Node: Hook file60630
+Node: Add-in functions60969
+Node: How the add-in function works61829
+Node: Defining option-add-in64028
+Node: Defining argument-add-in64750
+Node: Defining enclosing-add-in65632
+Node: How the function is called66486
+Node: Useful functions for creating add-in67162
+Node: Contribution68567
+Node: Add-in generator68841
+Node: Etcetera74213
+Node: Copying74818
 
 End tag table
diff --git a/docs/yatexj b/docs/yatexj
index ed1b627..a71aba9 100644
--- a/docs/yatexj
+++ b/docs/yatexj
Binary files differ
diff --git a/yatex.new b/yatex.new
index 1423464..fe92ec2 100644
--- a/yatex.new
+++ b/yatex.new
@@ -3,6 +3,8 @@
 
 1.79	=== yatex ===
 	�����‹��ȂǓ���‹����� [prefix] t e �� On-the-fly preview �����B
+	YaTeX-help-file �̃f�t�H���g�ʒu�� site-lisp/yatex/help �ɕύX�B
+	...
 
 
 1.78	Drag&Drop�T�|�[�g��lj��B
diff --git a/yatex19.el b/yatex19.el
index a5a0aff..96a0908 100644
--- a/yatex19.el
+++ b/yatex19.el
@@ -1,6 +1,6 @@
 ;;; yatex19.el -- YaTeX facilities for Emacs 19 or later
-;;; (c)1994-2013 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sat Jan  3 23:45:25 2015 on firestorm
+;;; (c)1994-2015 by HIROSE Yuuji.[yuuji@yatex.org]
+;;; Last modified Tue Jan  6 08:53:53 2015 on firestorm
 ;;; $Id$
 
 ;;; Code:
diff --git a/yatex23.el b/yatex23.el
index 1352697..1864568 100644
--- a/yatex23.el
+++ b/yatex23.el
@@ -1,6 +1,6 @@
 ;;; yatex23.el --- YaTeX facilities for Emacs 23 or later -*- coding: sjis -*-
-;;; (c)2014 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sun Jan  4 23:19:02 2015 on firestorm
+;;; (c)2014-2015 by HIROSE Yuuji.[yuuji@yatex.org]
+;;; Last modified Tue Jan  6 08:54:04 2015 on firestorm
 ;;; $Id$
 
 ;;; Code:
diff --git a/yatexadd.el b/yatexadd.el
index 10ca059..40e8e6a 100644
--- a/yatexadd.el
+++ b/yatexadd.el
@@ -1,7 +1,7 @@
 ;;; yatexadd.el --- YaTeX add-in functions
 ;;; yatexadd.el rev.21
-;;; (c)1991-2014 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sat Dec 20 14:55:10 2014 on firestorm
+;;; (c)1991-2015 by HIROSE Yuuji.[yuuji@yatex.org]
+;;; Last modified Tue Jan  6 08:53:41 2015 on firestorm
 ;;; $Id$
 
 ;;; Code:
diff --git a/yatexprc.el b/yatexprc.el
index d348118..95c1022 100644
--- a/yatexprc.el
+++ b/yatexprc.el
@@ -1,7 +1,7 @@
 ;;; yatexprc.el --- YaTeX process handler
 ;;; 
-;;; (c)1993-2014 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sun Jan  4 23:26:54 2015 on firestorm
+;;; (c)1993-2015 by HIROSE Yuuji.[yuuji@yatex.org]
+;;; Last modified Tue Jan  6 08:56:01 2015 on firestorm
 ;;; $Id$
 
 ;;; Code: